The pie charts compare the differences in expenditures per year by one school in the UK in three years, namely 1981, 1991, and 2001.
Overall, the school spend the greatest amount of money on teacher’s salaries, whereas insurance payments were the least.
The spending on teacher’s salaries accounted for 40 % of the total by 1981, the decade after, in 1991, school spend a half of the total expenditures on teachers. However, the figure for teacher’s wages decreased by 10 % by 2001. The same tendency showed the figures for resources: in 1981 it was 15 % of all expenditures, whereas ten years after over a fourth of the total spend on books and in 2001 it fell to 9% of the total. In contrast, for furniture and equipment was paid 15 % of the total, after that index decreased to 10%, but in 2001 that spending constituted more than 20%.
On the other hand, other workers’ salaries decreased over the period. In 1981 the figure for that was about 30 % of the total, then it fell by 6 % and in the last year, it decreased to 15% of the total spending. Contrary to that, insurance payments increased to 3% and 8 % in 1991 and 2001, correspondingly. 
The pie charts compare the differences in expenditures per  
year
 by one school in the UK in three years,  
namely
 1981, 1991, and 2001. 
Overall
, the school spend the greatest amount of money on  
teacher’s
 salaries, whereas insurance payments were the least.
The spending on  
teacher’s
 salaries accounted for 40 % of the  
total
 by 1981, the decade after, in 1991, school spend a half of the  
total
 expenditures on  
teachers
.  
However
, the figure for  
teacher’s
 wages  
decreased
 by 10 % by 2001. The same tendency  
showed
 the figures for resources: in 1981 it was 15 % of all expenditures, whereas ten years after over a fourth of the  
total
 spend on books and in 2001 it fell to 9% of the  
total
.  
In contrast
, for furniture and equipment  
was paid
 15 % of the  
total
, after that index  
decreased
 to 10%,  
but
 in 2001 that spending constituted more than 20%. 
On the other hand
, other workers’ salaries  
decreased
 over the period. In 1981 the figure for that was about 30 % of the  
total
, then it fell by 6 % and in the last  
year
, it  
decreased
 to 15% of the  
total
 spending. Contrary to that, insurance payments increased to 3% and 8 % in 1991 and 2001,  
correspondingly
.